Power stop



C. HEUZE POWER STOP June 28; 1932.

Filed'March 51. 1 928 m M l 1% v ,w w 7z. in 6 Patented June 28, 1932TATES POWER sror Application filed March 31, 1928, Serial No. 266,417,and in Belgium February 14, 1928.

The present invention relates to a device for automatically breaking thecircuit for transmiss1on of motlve power to a power re-v ceivingapparatus, when the mechanism driven by this apparatus does not runnormally.

With this object in view, the invention proposes to control the positionof said circuit breaking device by the displacement of a part actuatedby the power receiving apw paratus.

Other details and particularities of the invention will become evidentin the course of the description of the drawing annexed to the presentspecification, which shows diagrammatically by way of example, one formof realization of the invention.

In said drawing:

2 represents a power receiving apparatus consisting for instance, of anelectric motor,

to which the current is supplied by means of a conductor 3. Thisconductor is connected electrically with an armature of an electromagnet4, whereby said armature 4a is held in contact with the current lead 2aof the motor 2, so long as a current from a current source 5 acts onsaid electro-magnet.

In the circuit of the current source 5 is interposed a circuit breaker6, mounted on a block 7, which has an alternating rotary movement abouta pivot 7a.

This oscillatory or rotary reciprocatory movement may be controlled, forexample, by the following mechanism: on the pivot 7 a I is mounted alever 11 having connected to it a rod 12 which is articulated at the endof a bell-crank lever 13, one arm of which bears a roller 13a. Theroller can be displaced by a cam 14 which has a rotary movement impartedto it by a suitable clockwork device b (not shown).

The movement of cam leis regulated in such a way that the block 7occupies the position represented in dotted lines at the moment when astop 10a carried by a part 10 driven by the motor 2 must pass by saidblock, if the motion of part 10 is normal. The

said part 10 may be driven, for example,

through the intermedia of a rack 10 actuated by a pinion 15 whic derivesits motion from motor 2.

In the aforesaid dotted-line position of block 7, the stop 10a is out ofreach of a stop 7; forming part of, or connected to, the switch orcircuit breaker 6.

While said block 7 is in motion, the conductors 7 b and 7d ensure theclosure of the circuit 5 by their sliding contact with the conductors 8and 9.

If the motion of the part 10 is not regular, the stop 10a will strikethe stop 7 7 when passing by the side of a block 7 and the circuitbreaker 6 is opened. As a result, the current no longer passes throughthe el-ectro-magnet 4, and the armature 4a, in falling, cuts off thecurrent from the motor 2.

A circuit breaking device of this kind is very useful in machinery forgrinding, smoothing and polishing plate glass, such as used in glassworks, and consisting of tables which support the glass plates and movecontinuously underneath the tools. In this case, said tables constitutethe parts 10, and these tables can stop the whole installation, if forany reason they do not move regularly.

It is evident that the invention is not exclusively limited to theembodiment shown and that many modifications may be made in the shape,arrangement and constitution of the parts comprised in. said embodimentwithout exceeding its scope as claimed.

Thus the circuit breaker 6 might be interposed directly in the currentlead to the motor 2; the motion of the block 7 might be rectilinear in atransverse direction transverse to the direction of movement of theparts 10.

What I claim is:

1. A device for breaking the feed circuit of a motor, comprising aninterrupter in such .4 circuit; a relay circuit; a controller for saidinterrupter disposed in the relay circuit; a shiftable member operatedby the motor; a circuit breaker in said relay circuit; and a carrierwhereon the circuit breaker is mounted displaceable periodically in sucha way as to'lie outside the path of movement of the shiftable memberwhile still remaining electrically connected in the relay circuit duringsuch periodic displacements.

2. A device for breaking the feed circuit of a motor, comprising aninterrupter in such circuit, a controller for said interrupter shiftableby the motor, a member carrying the interrupter, means for displacingthe said member independently of the said motor in such a Way as toplace the interrupter periodically outside the path of movement of theshift-able controller, and means for maintaining the electricalconnection of the interrupter with the feed circuit during its periodicdisplacements with the said member.

In testimony whereof I aflix my si ature.

CHARLES HE ZE.

